食品科学
• 基础研究 • 上一篇 下一篇
马永强,魏 婧,王 鑫,李秀娟
出版日期:
发布日期:
MA Yongqiang, WEI Jing, WANG Xin, LI Xiujuan
Online:
Published:
摘要:
通过构建蓝莓汁抗坏血酸非酶褐变体系,测定蓝莓汁在贮藏(4、25 ℃和37 ℃)过程中的相关指标,并相应分别用零级、一级和复合动力学模型拟合。结果表明:褐变指数(A420 nm)符合复合动力学模型;贮藏过程中抗坏血酸不断降解,符合一级动力学模型;5-羟甲基糠醛含量的变化符合零级动力学模型。根据Arrhenius方程进行线性拟合,反映各指标随温度变化情况,在各贮藏温度下5-羟甲基糠醛的产生与褐变指数的变化呈现良好线性关系(R2≥0.949)。
关键词: 蓝莓汁, 抗坏血酸, 非酶褐变, 贮藏, 动力学
Abstract:
By building a non-enzymatic browning system containing ascorbic acid from blueberry juice, the relevant indicators of blueberry juice during storage (4, 25 and 37 ℃) were determined and tentatively fitted to zero-order, first-order and composite kinetic models. Browning index (BI; absorbance at 420 nm) complied with a composite kinetic model. The ascorbic acid was constantly degraded during storage, which could be described by a first-order kinetic model, while the 5-HMF content variation followed a composite kinetic model. Linear fitting was conducted using the Arrhenius equation to describe each indicator as a function of storage temperature. The generation of 5-HMF and BI showed good linear relationship (R2 ≥ 0.949) at three different storage temperatures.
Key words: blueberry juice, ascorbic acid, non-enzymatic browning, storage, kinetics
中图分类号:
TS255.3
马永强,魏 婧,王 鑫,李秀娟. 蓝莓汁抗坏血酸体系非酶褐变反应动力学[J]. 食品科学, doi: 10.7506/spkx1002-6630-201601020.
MA Yongqiang, WEI Jing, WANG Xin, LI Xiujuan. Kinetics of Non-Enzymatic Browning Reaction from Ascorbic Acid Model System of Blueberry Juice[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201601020.
0 / / 推荐
导出引用管理器 EndNote|Ris|BibTeX
链接本文: https://www.spkx.net.cn/CN/10.7506/spkx1002-6630-201601020
https://www.spkx.net.cn/CN/Y2016/V37/I1/109